Connecting springs for use in bed bottoms and other places



Feb. 16 1926.

C. B. PLATT ET AL CONNECTING SPRINGS, FOR USE IN BED BOTTOMS AND OTHER PLACES Filed Nov. 2, 1923 gamma 953m,

a J. H'ozmq ?atented Feb. 16, 15:325.

unirenjsrnreis PATENT OFFICE.

CORNELIUS LB. PLATT AND WILLIAM s. BRow or VCABTHAGE, MISSOURI.

CONNECTING SPRINGS con use IN BED BorT oMsANn 0mm PLACES.

hpplicati'on filed Nove n'iber 2,1923. Serial No. 672,303.

in Bed Bottoms and Other Places of which the following is a specification.

Our invention relates to helical springs such as are used as the top connections between the spiral springs of bed bottoms, although the invention is not'limlted in its applications to this particular use. Two of these connecting springs are usually used together, crossing each other. at right angles and being interlaced so that the tops of the coils of the springs used lie in approximately a common plane. My invention has'for one of its objects to render more easy the assembling of such connecting springs and their replacement should this become necessary.

In the accompanying drawings-- Figure 1 is a perspectiveview'of aspring embodying our invention.

2 is a perspective view of another spring of the form such as is now commonly used as the top connection uniting the spiral springs of bed bot Fig; 3 is a broken perspective view show ing two springs crossed and united according to our invention.

Fig. 4 is a perspective view of a's'inall'section of a bed bottom showing the application of our inventionthereto.

in, the accompanying drawings, A indi cates the spiral springs of a bed bottom. These may be of the usual form and construction or of a special design, as may be desired, and are supported in any usual or preferred n anncr. Their upper ends are connected by the crossed helical springs, 2 and 3. The helical spring 2 is an open or loose coil and cit-uniform size from end to end, being identical with the helical springs now commonly employed in the bed art, for uniting the upper ends of the spiral s rings A. p

The present practice is to screw one of these springs, 2, through the coil f another similar spring at a point appriiiximately. midway between the ends of the latter, :r

', procedure that takes considerable time and makes a. rather loose connection between them, although permitting them to lie in apunited to the spiral springs with are associated.

springs thus united-then have their ends con nected with the upper coils of the spiral springs A. It will beseen that thisproce 'dure necessitates the interengagl'ng of the crossed connecting springs before they are The spring 3 which we employ is of novel construction In that one or more-the number may be variedof the intermediate coils of thehelix are of smaller size than the rest of thecoils as indicated are. We prefer that these coils of reduced size shall lie, along one line of the spring 3 vconsidered as a whole,

in the same plane as do the other, larger,.

coils, an'arrangeinentthat causes a pocket or recess to be formed above the .coils4 andbetween those coils, 5,0flarger size which are next Immediately beyond the reduced section of the spring. 1

which they 1 In practicing our invention a spring2 is connected at its ends with the upper coils of diagonallyopposite spiral springs A, and

a spring3 similarly connected with the upper coils of another pair'of diagonallyopposits springs, the springs 2 and 25 being arranged to cross'each other'at their middle portions. The} springs 2 and Stare united with, the spiral springs A before they are interconnected"with each other,as in practicing our invention itis not necessary that one of these springs be screwedii toafcoil of the other as has heretofore beenthe practice. The connecting springs being" united to the spiral springs, and crossing each other as represented in Figs. 3 and 4, the spring 2 is pressed into the recess between the'coils 5 of the spring 3, causing one of the coils, ,6, of the spring 2 to overlie the small coils 4, and another coil, ora portion of a coil, 7, to underlie the reduced coils 4t. lhisinterengaging of the crossed connecting springs is easily eli ected, the resiliency ol' the springs permitting the parts to assume the relations just described. and illustrated in Fig. 3, and when these relations have'been assumed the springs lie in common planes and are so united that there is less looseness between them than there is when two springs like 2 are united by screw- \Vhile we have described our invention as applied to springs especially intended for use as the top connections for spiral springs of: bed bottoms, it is apparent that they may be used in other situations where it is desired to employ a resilient connection formed of UUSSGtl helical spring members uniting di agonally opposite objects.

lVe herein refer to the recess formed by reducing the size of the mid coils of the spring 3 as being above such coils, and the coil (3 ot the spring 2 as passing over the reduced coils l; and the coil 7 as underlying or passing below such coils. These terms abovel over, underlying" and below are used for ease of description and are correctly employed when the parts of the spring connection are arranged as represented in Fig. 3. It will be understood, however, that the springs might be reversed in position from the showing of the drawings, in which event the recess would be below the coils 4:.' It should be understood, therefore, that the terms above referred to are not used in a limiting sense as to direction, but rather indicate relationship between the several parts constituting the connection considered as a whole.

lVhat we claim is 1-- 1. an elastic spring connection, comprising crossed helical springs, certain of the coils of the helix of one of the springs being oi reduced size, and the other spring crossing this one at the place where its smaller coils are located.

2. An elastic spring connection, comprising crossed helical springs, one spring having the middle section of its helix of reduced size, and the other springs crossing said first spring at its said middle section.

3. An elastic spring connection of crossed helical springs one of which has in its'intermediate portion a recess between coils of the spring, of greater width than the distance between coils and formed by reason of certain of the coils of the helix being olt reduced size, and the other spring crosses the first named spring at the place where the coils are of reduced size and the spring is recessed' 4;. An elastic spring connection, comprising spiral springs, the mid coil of one of which springs is of smaller size than the other coils, the small size coil being arranged so as to form an open recess above it and between the full size coils iimnediately adjacent thereto, and the other spring being of uniform size throughout and seated in the aforesaid recess where it crosses the iii-st. mentioned spring, a coil of the last spring passing over the small coil of the tirst spring and being continued below said coil, whereby the springs are interlocked.

In a spring bed bottom, the combination with a set of spiral springs, of elastic spring connections uniting the springs, each connection comprising cross helical springs, one or which has a short section of its mid portion formed of relatively small coils, forming a recess open from above between the larger coil portions of the spring, and the other spring of the connection crossing the first spring and lying in the recess formed in the latter, the coils of the second spring passing both above and below the coils of reduced size in the first mentioned spring, thus interlocking the spring and permitting the exposed surface 01 the connection as a whole to lie in approximately a. common plane.

6. A helical spring adapted to be used in association with a spring that crosses it, and as a spring connection, having the coils of a. short intermediate section of the spring of reduced size as compared with the coils on either side of said section.

CORNELIUS B. PLATT. lVILLIAM S. BROWN. 

